ASTM E255-23
(Practice)Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
SIGNIFICANCE AND USE
4.1 This practice is intended primarily for the sampling of copper and copper alloys for compliance with compositional specification requirements.
4.2 The selection of correct test pieces and the preparation of a representative sample from such test pieces are necessary prerequisites to every analysis. The analytical results will be of little value unless the sample represents the average composition of the material from which it was prepared.
SCOPE
1.1 This practice describes the sampling of copper (except electrolytic cathode) and copper alloys in either cast or wrought form for the determination of composition.
1.2 Cast products may be in the form of cake, billet, wire bar, ingot, ingot bar, or casting.
1.3 Wrought products may be in the form of flat, pipe, tube, rod, bar, shape, or forging.
1.4 This practice is not intended to supersede or replace existing specification requirements for the sampling of a particular material.
1.5 The values stated in SI units are to be regarded as standard. The values in parentheses are given for information only.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific precautionary statement appears in Appendix X4.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E255 − 23
Standard Practice for
Sampling Copper and Copper Alloys for the Determination
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of Chemical Composition
This standard is issued under the fixed designation E255; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E135 Terminology Relating to Analytical Chemistry for
Metals, Ores, and Related Materials
1.1 This practice describes the sampling of copper (except
electrolytic cathode) and copper alloys in either cast or
3. Terminology
wrought form for the determination of composition.
3.1 For definitions of terms used in this practice, refer to
1.2 Cast products may be in the form of cake, billet, wire
Terminology E135.
bar, ingot, ingot bar, or casting.
3.2 Definitions of Terms Specific to This Standard:
1.3 Wrought products may be in the form of flat, pipe, tube,
3.2.1 lot, n—as used in this practice, the unit to be sampled,
rod, bar, shape, or forging.
in pounds or pieces.
1.4 This practice is not intended to supersede or replace
3.2.2 test sample, n—as used in this practice, a composite of
existing specification requirements for the sampling of a
material taken by approximate proportional weight from each
particular material.
of the test pieces and from which the test portion shall be taken.
1.5 The values stated in SI units are to be regarded as
NOTE 1—Appendix X1 describes the refinery shapes. Appendix X2
standard. The values in parentheses are given for information
describes the fabricators’ forms.
only.
4. Significance and Use
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.1 This practice is intended primarily for the sampling of
responsibility of the user of this standard to establish appro-
copper and copper alloys for compliance with compositional
priate safety, health, and environmental practices and deter-
specification requirements.
mine the applicability of regulatory limitations prior to use. A
4.2 The selection of correct test pieces and the preparation
specific precautionary statement appears in Appendix X4.
of a representative sample from such test pieces are necessary
1.7 This international standard was developed in accor-
prerequisites to every analysis. The analytical results will be of
dance with internationally recognized principles on standard-
little value unless the sample represents the average composi-
ization established in the Decision on Principles for the
tion of the material from which it was prepared.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Selection of Test Pieces
Barriers to Trade (TBT) Committee.
5.1 Casting:
2. Referenced Documents 5.1.1 Finished Product or Shipment Sample:
2 5.1.1.1 A shipping lot shall consist of all castings of the
2.1 ASTM Standards:
same configuration and size necessary to comply with the
requirements of a single purchase order.
5.1.1.2 Castings are frequently produced in advance of
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This practice is under the jurisdiction of ASTM Committee E01 on Analytical
orders and manufacturer’s or foundry lots may intermingle in
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.05 on Cu, Pb, Zn, Cd, Sn, Be, Precious Metals, their Alloys, and
stock.
Related Metals.
5.1.1.3 Since the size and configuration of castings vary, the
Current edition approved June 1, 2023. Published June 2023. Originally
number of test pieces to be selected shall be subject to
approved in 1966. Last previous edition approved in 2014 as E255 – 07 (2014)
agreement between the manufacturer or supplier and the
which was withdrawn January 2023 and reinstated in June 2023. DOI: 10.1520/
E0255-23.
purchaser.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.2 Manufacturer’s or Foundry Sample:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.2.1 For routine sampling and at the option of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. manufacturer, a lot shall consist of the following:
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E255 − 23
(a) All of the metal poured from a single furnace or 5.3.1.2 When possible, test pieces shall be selected in a
crucible melt, or manner th
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